如何在连接和基于行的限制（分页）中获得不同的结果？

现在您将根据基于行的限制获得正确数量的结果。这样做的原因是因为投影会执行作为 sql查询的一部分的鲜明性检查，而不是ResultTransformer执行的操作，它是在之后过滤鲜明度的结果已经执行了sql查询。

值得注意的是，现在不用获取对象列表，您现在将获得一个id列表，您可以使用它来保存对象稍后休眠。

I'm trying to implement paging using row-based limiting (for example: setFirstResult(5) and setMaxResults(10)) on a Hibernate Criteria query that has joins to other tables.

Understandably, data is getting cut off randomly; and the reason for that is explained here.

As a solution, the page suggests using a "second sql select" instead of a join.

How can I convert my existing criteria query (which has joins using createAlias()) to use a nested select instead?

You can achieve the desired result by requesting a list of distinct ids instead of a list of distinct hydrated objects.

Simply add this to your criteria:

Now you'll get the correct number of results according to your row-based limiting. The reason this works is because the projection will perform the distinctness check as part of the sql query, instead of what a ResultTransformer does which is to filter the results for distinctness after the sql query has been performed.

Worth noting is that instead of getting a list of objects, you will now get a list of ids, which you can use to hydrate objects from hibernate later.